d74a9dbada5add1402922ade29c1e7a7f40b01f93971aaa3273af0ad77e1f546

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2024 19:24

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General

Target

2024-01-25_21d6c7948a19304067fedc4d95ac3f7c_cryptolocker.exe
Size

34KB
MD5

21d6c7948a19304067fedc4d95ac3f7c
SHA1

c7c3f0e71cff186ac19336eb92fd7cd37985c9dc
SHA256

d74a9dbada5add1402922ade29c1e7a7f40b01f93971aaa3273af0ad77e1f546
SHA512

2b09cfef128eba7deb2cbb110b748e0ead999af5bc46f66b6dbbcb6df25c6f3bb11177ae9d80e8749c102454cd1713852e7c22e917a75ede8065c5914a671020
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUqMV6U8zKvGaLLAd:bA74zYcgT/Ekd0ryfj86U8zbCAd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001000000002315e-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-01-25_21d6c7948a19304067fedc4d95ac3f7c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
320	hasfj.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 320	1200	2024-01-25_21d6c7948a19304067fedc4d95ac3f7c_cryptolocker.exe	88
PID 1200 wrote to memory of 320	1200	2024-01-25_21d6c7948a19304067fedc4d95ac3f7c_cryptolocker.exe	88
PID 1200 wrote to memory of 320	1200	2024-01-25_21d6c7948a19304067fedc4d95ac3f7c_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-25_21d6c7948a19304067fedc4d95ac3f7c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_21d6c7948a19304067fedc4d95ac3f7c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
34KB

MD5
93e95018e0d1389839a78cbbdf83595b

SHA1
81ef7c91ef3059ce86faebe369c0d5f140f962cd

SHA256
45dc58c1f665578d975d9ca71a91f6ceb5448c5fbe28465c3b13281aca564569

SHA512
3f9fea8a643fc90f47d6788ecc4608e60ea07652d96cc31d8dd2b82d66cd24b1dc65cbb6dc3c31fe1b43589425b90a2138ef96cfcda8b8bc0b4217c8925eab54

Download Submit
memory/320-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/320-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/1200-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/1200-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/1200-2-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download